Link - Required Port 443 For Veeam Backup Replication Is Occupied By Another Application

If the conflicting application allows port changes, move it to a different port (e.g., 444 or 8443).

Your action plan must be based on the outcome of your investigation.

Open and run:

The blinking cursor on the dashboard monitor felt like a heartbeat, and not a calm one. It was 2:00 AM on a Sunday, the window for the off-site backup chain to close in exactly fifty-five minutes.

Need further assistance? Visit the official Veeam R&D Forums or open a support case with Veeam Customer Support. Include the output of veeamportssniffer.exe (available in the Veeam ISO tools folder) for rapid troubleshooting. If the conflicting application allows port changes, move

If the PID belongs to w3wp.exe or System , IIS is likely hosting a website on port 443.

Because port 443 is currently within Veeam v13 settings, you must reconfigure the conflicting application. Option 1: Reconfigure Hyper-V Replication (If Applicable) If Hyper-V is the culprit, change its replication port: Go to Hyper-V Settings > Replication Configuration . It was 2:00 AM on a Sunday, the

Older versions occasionally bind to web ports as fallbacks.

If changing the occupying application's port or configuring Veeam Backup & Replication to use a different port is not feasible, consider the following alternative solutions: Include the output of veeamportssniffer

To identify which application is associated with that PID, use: